\subsection{Move Notation}

\label{move-notation} \label{position-notation}
\label{pos-notation}

Because positions in \TC have an extra dimension, a new notation
had to be created to describe them. Normal notation simply
concatenates the file letter with the rank number, so a piece on
file c and rank 6 is at position \verb!c6!. In \TC there is also a
time coordinate representing the turn. One option is simply to
concatenate the turn onto the standard notation, so the same piece
in turn one would be at \verb!c61!. This would work, because the
rank number is only ever 1--8, and thus is always exactly one digit
long, so there is no need to delimit the fields. However, the
chosen solution was to separate the values with a 't'. Thus the
piece would be at \verb!c6t1!. This makes the positions easier to
understand, since the 't' can be read as `time' or `turn'. It also
allows for future variants to be played on boards with more than 9
ranks without modifying the notation.

For denoting movements, the notation simply concatenates two
positions, so \verb!c6t1e8t1! means
``Move from file c, rank 6 in turn 1 to file e rank 8 in turn 1''.

